At/in retail and wholesale

[Rachel Adams]

Hello.
Should I use ''at'' or ''in'' before ''wholesale'' and ''retail?''

For example, ''They prefer to buy items at/in wholesale, at/in retail.''

 

[SoothingDave]

You can say "at wholesale" with the understanding that the word "prices" is being omitted. Or, just use "buy wholesale."

 

[jutfrank]

Neither needs a preposition of any kind when used as adverbs. The phrases are buy/sell something wholesale/retail.

 

[Rachel Adams]

Neither needs a preposition of any kind when used as adverbs. The phrases are buy/sell something wholesale/retail.

I see. I will not use reverso.net again. I could only find one example of ''at retail'' on another website. ''[FONT=&quot]At retail, it has [/FONT]sales[FONT=&quot] of 177.6m''. [/FONT]
https://www.collinsdictionary.com/dictionary/english/at-retail